Hi @ncpacpl,
Thanks for your detailed questions!
Yes — when you’re using myQNAPcloud Link, your connection is always secure, even if the “Secure Login (SSL)” option appears off in the app. myQNAPcloud Link uses encryption to protect data during transfer, so your uploads and downloads via Qfile Pro are safe.
For more details, please check out our FAQ here:
Is my connection secure when using mobile app with myQNAPcloud Link?
Hope this helps!